Inverse Trig Triangles

Solve the right triangle.

• <A = 34^o, <C = 56^o, AC = 5.59

• <A = 56^o, <C = 34^o, AC = 5.59

• <A = 34^o, <C = 56^o, AC = 9.01

• <A = 56^o, <C = 34^o, AC = 9.01

Set up an equation that could be used to solve for the variable.

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Which expression is correct for "y"?

• y = tan^–1(31/23)

• y = sin^–1(31/23)

• y = cos^–1(31/23)

Triangle PQR is any right triangle. Which value cannot be true?

What would you use to solve for x?

• Pythagorean Theorem

• Trig

• Inverse Trig

What would you use to solve for x?

• Pythagorean Theorem

• Trig

• Inverse Trig

Which equation would be used to solve for x?

• 34²+19²=x²

• sin(34)= 19/x

• cos(34)= 19/x

• cos^-1(19/34)

Which equation would be used to solve for x?

• x²+78²=11²

• sin(78)= x/11

• sin(11)= x/78

• sin^-1(11/78)

Which equation would be used to solve for x?

• x²+9²=13²

• sin^-1(13/9)

• sin(13)= 9/x

• sin^-1(9/13)

Which equation would be used to solve for x?

• x²+25²=32²

• cos(25)= x/32

• tan^-1(32/25)

• cos^-1(25/32)